This is the story of Oxana Malaya just one of the many cases of feral children.
A feral child is a human child who, from a very young age, has lived in isolation from human contact and has no (or little) experience of human care, loving or social behavior, and, crucially, of human language. Feral children are extremely rare and can be brought up by animals, confined by humans (often parents) or live in the wild in isolation. Throughout the world, just over a hundred incidences of the phenomenon have been reported.